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Question

Find the value of x.



Your Answer
A

37.5o

Correct Answer
B

52.5o

Your Answer
C

72.5o

Your Answer
D

75o


Solution

The correct option is B

52.5o


The angles AOB and COB are supplementary angles.

  AOB + COB = 180

x+25+3x+35=180

4x+60=180

4x=120

x=30

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